The following themes didn’t install properly from Cinnamon Settings and were not reviewed:

Odinn

Nadia

Minty Colors

White

Frosty Mint

Windows 7 Basic Light

Helios

Aero Cinnamon theme pack (3 versions)

Archway

Light Dark Balance

DarkShuffleMint

Ambiance Crunchy

Energreen (Full Pack)

Lambda

Osirion

All other themes failed the certification.

Requirements for the 1.8 certification:

Here’s what’s required for a theme to be certified 1.8:

It should install properly from Cinnamon Settings

It should provide a thumbnail picture

It should provide styles for desklets

To test: Add the “clock” desklet to the desktop, go to “General Desklets settings” and set “Decoration of desklets” to “Border and header”. The theme should provide a border around the clock.

It should provide up to date styles for the sound applet

To test: Play a song in Banshee, open the sound applet (which should show the multimedia buttons and information about the song), make sure the layout is fine and the seeker slider in particular fits properly within the applet.

It should provide support for the new “Flashspot” feature

To test: Add the “Digital photo frame” desklet on the desktop, click on its “configure” button in Cinnamon Settings, and click on “Highlight”. The desklet should briefly highlight itself.

Thanks for these lists. However, I updated my “FlatStudio Light” Cinnamon theme for 1.8 nearly a week ago, and it hasn’t been certified yet. I followed all the recommendations on here and on this page. I’ve also looked at several other themes that checked out fine for 1.8 yet have not been certified for months. What’s going on guys?